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- 저자 : Kyung Tak Ma (검색결과 2 건)
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이상협,마경탁,홍영재,Sang Hyup Lee,M,D,Kyung Tak Ma,M,D,Young Jae Hong,M,D 대한안과학회 2007 대한안과학회지 Vol.48 No.1
Purpose: To evaluate the outcome of Ahmed valve implantation as a primary or secondary glaucoma surgery to treat refractory glaucoma patients. Methods: A total of 101 eyes of 101 patients with refractory glaucoma, who received Ahmed valve implantation between March 1995 to September 2004 were included. We divided cases into primary surgery group, who had no trabeculectomy, and secondary surgery group, who had trabeculectomy before Ahmed valve implantation. Successful operation was defined as having the following outcomes: (1) postoperative intraocular pressure (IOP) sustained between 5 and 21mmHg and reduced 30% from the baseline IOP with or without medication, (2) no visual decline due to IOP or complications, and (3) no additional filtering surgery. Clinical records were reviewed, and IOP, antiglaucoma medications, and complications were recorded. Kaplan-Meier survival analysis was used to calculate the overall probability of success. Results: In primary surgery group, overall success rate was 57.6%, 46.7%, 39.7%, and 39.7% at 1, 3, 5, and 7 years, respectively. In secondary surgery group, overall success rate was 67.8%, 58.1%, 52.4%, and 43.5% at the same time points. There was, however, no statistical difference in success rates between two groups. The incidence of complications were as follows: 4.2% of endophthalmitis, 4.2% of valve exposure, 4.2% of hypotony was found in the primary surgery, and 3.8% of endophthalmitis, 1.9% of valve exposure, 9.4% of hypotony were found in the secondary surgery. There were no statistical differences in the incidences of complications between the two groups. Conclusions: Ahmed valve implantation was effective for IOP control in refractory glaucoma patients. Success rate did not show significant difference between primary and secondary Ahmed valve implantation group.
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Comparison of OCT and HRT Findings Among Normal, Normal Tension Glaucoma, and High Tension Glaucoma
( In Ha Shin ),( Sung Yong Kang ),( Samin Hong ),( Seung Kab Kim ),( Gong Je Seong ),( Ma Kyung Tak ),( Chan Yun Kim ) 대한안과학회 2008 Korean Journal of Ophthalmology Vol.22 No.4
Purpose: To evaluate the relationship between optic disc and retinal nerve fiber layer (RNFL) measurements obtained with the optical coherence tomography (OCT) and the Heidelberg retina topography (HRT) in normal, normal tension glaucoma (NTG), and high tension glaucoma (HTG). Methods: Normal, NTG and HTG subjects who met inclusion and exclusion criteria were evaluated retrospectively. One hundred seventy eyes of 170 patients (30 normal, 40 NTG, and 100 HTG) were enrolled. Complete ophthalmologic examination, HRT, OCT, and automated perimetry were evaluated. Results: Disc area, cup area and cup/disc area ratio measured with HRT were significantly different between NTG and HTG (all p<0.05). Mean RNFL thickness measured by OCT with ascanning diameter of 3.4 mm was larger in NTG than HTG (84.97±24.20 ㎛ vs. 73.53±27.17 ㎛, p=0.037). Four quadrant RNFL thickness measurements were not significantly different between NTG and HTG (all p>0.05). Mean deviation and corrected pattern standard deviation measured by automated perimetry was significantly correlated with mean and inferior RNFL thickness in both NTG and HTG (Pearson`s r, p<0.05). Mean RNFL thickness/disc area ratio was significantly larger in HTG than NTG (35.21±18.92 vs. 31.30±10.91, p=0.004). Conclusions: These findings suggest that optic disc and RNFL damage pattern in NTG may be different from those of HTG. Korean J Ophthalmol 2008;22:236-241
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